Gourt > Science > Social Sciences > Archaeology > Topics > Underwater (33)
Underwater, sometimes shortened as U/W, is a term describing the realm below the surface of water where the water exists in a natural feature (called a body of water) such as an ocean, sea, lake, pond, or river. Three quarters of the planet earth is covered by water. A majority of the planet's solid surface is abyssal plain, at depths between 4000 and 5500 m (13,000 to 18,000 ft) below the surface of the oceans. The solid surface location on the planet closest to the center of the orb is the Challenger Deep, located in the Mariana Trench at a depth of 10,924 m (35,838 ft) under the sea.
Although a number of human activities are conducted underwater—such as scuba diving for work or recreation, or even underwater warfare with submarines—this very extensive environment on planet earth is hostile to humans in many ways and therefore little explored.
An immediate obstacle to human activity under water is the fact that human lungs cannot naturally function in this environment. Unlike the gills of fish, human lungs are adapted to the exchange of gases at atmospheric pressure, not liquids. Aside from simply having insufficient musculature to rapidly move water in and out of the lungs, a more significant problem for all air breathing animals, such as mammals and birds, is that water contains so little dissolved oxygen compared with atmospheric air. Air is around 21% O2; water typically is less than 0.001% dissolved oxygen.
More on [ Underwater ]
Scuba Diving :: Outdoors
Oceanography :: Earth Sciences
Maritime :: By Topic
Olympus Introduces the STYLUS TOUGH-3000: Shoot Stills & HD Video Underwater - http://www.cameratown.com/news/news.cfm?id=8580
Cameratown (Cameratown) Thu, 07 Jan 2010 08:00:54 -0000
Olympus Introduces the STYLUS TOUGH-3000: Shoot Stills & HD Video Underwater - http://www.cameratown.com/news/news.cfm?id=8580
'Kodak touchscreen Slice camera, underwater Playsport camcorder, and friends hands-on.. http://bit.ly/60B4D5 #engadget'
TechSmasher (TechSmasher) Thu, 07 Jan 2010 07:59:52 -0000
'Kodak touchscreen Slice camera, underwater Playsport camcorder, and friends hands-on.. http://bit.ly/60B4D5 #engadget'
Cool underwater photos http://bit.ly/5tqiyg (via @SurfPhotography)
Rimogar (ricardo morales ) Thu, 07 Jan 2010 07:58:04 -0000
Cool underwater photos http://bit.ly/5tqiyg (via @SurfPhotography)
Scuba spots: Where to dive into Mexico's underwater wonders: http://bit.ly/86LkPD
JeffreyAGray (JEFF GRAY) Thu, 07 Jan 2010 07:55:42 -0000
Scuba spots: Where to dive into Mexico's underwater wonders: http://bit.ly/86LkPD
Recently played 'The Analog Skeleton of an Underwater Leviathan' by Deepspace.
StillStreamNews (StillStream.com) Thu, 07 Jan 2010 07:55:02 -0000
Recently played 'The Analog Skeleton of an Underwater Leviathan' by Deepspace.
@drugbuddy if its possible cuba carik those disposable film underwater cameras. a bit hard to find these days though.
sueannajoe (sueannajoe) Thu, 07 Jan 2010 07:53:14 -0000
@drugbuddy if its possible cuba carik those disposable film underwater cameras. a bit hard to find these days though.
1994 Preliminary Report for Fujairah - Preliminary report outlines the surveying efforts made by the University of California Office of Scientific Diving research team, led by Chris Kostman, M.A. This survey of the entire eastern coast of the UAE.
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Archaeology of Whaling in Southern Australia and New Zealand - An international project looking at the archaeology and history of Australasia's whaling industry. Aims, conferences, bibliography, regional contributions.
Ballard and the Black Sea - National Geographic reports on Dr Bob Ballard's expedition in search of evidence of human habitation on the bed of the Black Sea. Interviews, transcripts, and observation logs.
Meta Description: [ Marine explorer Robert (Bob) Ballard discovers proof of a flood of biblical proportions and finds ancient Roman shipwrecks in the Black Sea. ]
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BBCi: Marine Archaeology - Learn about marine archaeology from the waters around the British Isles with maps and an interactive quiz.
Meta Description: [ Error 404 - Page not found ]
Captain Rick's Maritime Consultation Site - Features on underwater archaeology, shipwrecks, and treasure found in Hawaii.
Meta Description: [ Informational site for Hawaiian maritime history, surfing history, Hawaiian nautical phrases and advice. ]
Charter on the Protection and Management of Underwater Cultural Heritage - From the International Council of Monuments and Sites.
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Department of Maritime Archaeology Bibliographic Database - Searchable listing of maritime archaeological and associated references.
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Florida State University Underwater Archaeology Projects - Contains details on prehistoric and historic underwater sites including several shipwrecks, fortifications, and habours.
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History and Archaeology of the Ship - Extensive lecture notes from John Illsley on the development and typology of ships from ancient to early modern, with bibliography.
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History on the Seabed - Illustrated feature from Welcome to Finland on marine archaeology in the Baltic sea.
Issues in Underwater Archaeology - The Connecticut Office of State Archaeology is striving to develop a cooperative approach to protecting our maritime heritage. Artifact identification, workshops, FAQs for divers, sites in Connecticut.
Nordic Underwater Archaeology - Describes how the cold brackish Baltic Sea has preserved wrecks, as well as giving links to maritime archaeology resources worldwide.
Meta Description: [ If you like history and scuba diving, this is for you. The Baltic Sea, in Northern Europe, is a cold brackish sea where wood is preserved for centuries. Many sunken ships still wait to be discovered, there and worldwide. ]
Rhode Island Marine Archaeology Project - Performs background research, collects historical information and conducts field work on the vessels beneath Rhode Island waters.
Meta Description: [ This site describes the goals, research, training and fieldwork opportunities that our organization has for volunteers. ]
River Yields Sunken Scientific Riches - From MSNBC, Hudson mapping project reveals hidden treasure, including scores of historic shipwrecks.
Meta Description: [ A Hudson River survey has revealed an archaeological treasure of shipwrecks — but the find also poses a legal and ethical challenge. ]
Shipwreck Salvage - Treasure Hunters vs. Archaeologists - An illustrated article from About.com on kraters, amphoras and other Greek pottery found in shipwrecks.
Meta Description: [ Amphoras, sherds, the underwater archaeology of ancient shipwrecks, and the underwater archaeologists and treasure hunters. ]
The Trireme Trust - Studies of the design, use, and capabilities of this historically important type of ship.
Ultramarine Newsletter - Encourages research of coastal archaeology and maritime heritage of the Americas. (Spanish and English)
Underwater Archaeology - Directory of resources on the Internet from Tanya Rabourn.
Underwater Archaeology Discussion List - Sub-Arch covers the field of underwater archaeology. It is a list primarily intended for professionals in the field.
Underwater Finds from Mecklenburg-Vorpommern - Description from the maritime museum at Sassnitz, on the Isle of Rügen of the local types of archaeological finds and sites underwater. German with summary in English.
Meta Description: [ Website des Landesverbandes fr Unterwasserarchologie Mecklenburg-Vorpommern e.V. ]
Underwater Mystery Unravels - Xinhua reports on China's first-ever underwater archaeological expedition. The site, possibly Han Dynasty, is deep in Fuxian Lake in Southwest China's Yunnan Province.
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